My two cents

[user1234]

On Saturday, 21 October 2017 at 21:45:11 UTC, Adam D. Ruppe wrote:
> On Saturday, 21 October 2017 at 20:02:28 UTC, user1234 wrote:
>> I'm not sure that people talked much about the elvis operator 
>> (which was introduced in the topic by M.Nowak). In the first 
>> message were mentioned the null coalescence operator "??"
>
> What's the difference between `?:` and `??`?
>
> As far as I can tell, they'd do the same thing in most cases.

Elvis operator returns LHS if LHS is true, otherwise RHS
Null coalescing operator returns LHS if LHS is not null, 
otherwise RHS

But since in D nullable values can be interpreted as booleans 
you're right "?:" would do the same as "??" and even more. 
Actually "?:" is preferable (which i didn't realize in first 
place :/).